1.) Cloud Sync
ReadCube's most prominent Pro feature is Cloud Sync, which allows our users to take their library and store it on an online database. Storing your articles here serves several purposes - it allows you to back up your library in case your computer crashes and you lose access to your articles/annotations, it allows you to move your library between multiple computers and keep that library updated between machines, and it allows for annotation on multiple devices and synchronization of those notes.
For more information, please see: http://support.readcube.com/knowledgebase/articles/278198-cloud-sync-faq
2.) The Metrics tab
One of the new tabs we added with the ReadCube Pro update is the Metrics tab. You can find this as one of the side-bar options when reading an article. The metrics tab provides valuable information about where an article is being talked about online, how many times it's been cited in other academic articles, and easily accessed data on when it was the most popular.
3.) The ability to sync your library with your mobile device
While ReadCube's iPad/iPhone app is free, the ability to sync your library from your desktop and vice versa is a premium feature.
In addition to creating lists and nested sublists to organize your library, you can now add one or more searchable tags to any reference. To create a tag, just type a hashtag - e.g. #journal-club - in the Notes field in the right panel, under the abstract. Hashtags can contain dashes or periods.
5.) Advanced File Management
Automatically sort and rename your imported PDFs according to the article's metadata, such as author names, publication year and journal. The settings can be found in the Preferences section of the app - click on the gear icon in the lower left corner of the app, and then the "File Management" tab.
6.) The "watched folders" feature
Under your preferences menu (the gear in the bottom left), navigate to the "ReadCube Pro" tab. Here, you will find a list of "Watched Folders" that can be edited at any time. Folders on this list will be searched by ReadCube whenever you start the program up for any additions. If there any PDF's that weren't there before, they will automatically be added to your library.
For more information, please see: http://support.readcube.com/knowledgebase/articles/329991-can-i-have-readcube-monitor-specific-folders-for-n